A method of forming a device having a compliant member includes applying heat to a thermoplastic elastomer to maintain the thermoplastic elastomer in a softened state. The thermoplastic elastomer is extruded in the softened state as a film of thermoplastic elastomer. One or more of a bobbin and a housing, each having and end, is positioned such that the end extends at least partially into the film of thermoplastic elastomer. The positioning occurs when the thermoplastic elastomer is in the softened state and/or the bobbin and/or housing is at a temperature that is greater than a temperature of the film of thermoplastic elastomer. The film is cooled so that the bobbin and/or housing are secured to the film and so that the thermoplastic elastomer is in a state that exhibits rubber-like properties.

Circumferential mode vibrations, in a diaphragm of an acoustic transducer, are damped by defining at least one elongated opening extending radially along a portion of a length from the central area to the outer perimeter being covered by a material having higher damping properties than the material of the cone.

A microphone and its manufacturing method are presented. The manufacturing method includes providing a substrate; forming a ring opening extending from an upper surface of the substrate into the substrate; forming a ring separation component by forming a separation material in the ring opening; forming an insulation layer on the substrate; forming a front-end device on the insulation layer; and etching a back side of the substrate using the ring separation component and the insulation layer as an etch-stop layer to form a back-hole.

An electroacoustic transducer includes: a diaphragm having two pairs of longitudinal split tubular surfaces; a converter that performs conversion between vibration of the diaphragm and an electric signal; and a supporter supporting the diaphragm. The two pairs of longitudinal split tubular surfaces form valleys and ridge portions. In each pair of the two pairs of longitudinal split tubular surfaces, one-side portions of the respective longitudinal split tubular surfaces form a valley. Another-side portion of the split tubular surface of each one of the two pairs and an other-side portion of the split tubular surface of the other of the two pairs form a ridge portion. The two pairs of longitudinal split tubular surfaces are arranged in at least one of a state in which the valleys are orthogonal to each other and a state in which the ridge portions are orthogonal to each other.

A method of forming a device having a compliant member includes providing an elastomeric layer in an uncured state. The elastomeric layer is pre-cured to increase its viscosity. Subsequently, a bobbin and housing, each having an end, can be positioned such that their ends extend at least partially into the elastomeric layer. The elastomeric layer is cured to secure it to the bobbin housing. Examples of pre-cure and cure operations include one or more of a thermal cure, evaporative cure and ultraviolet cure, and the application of moisture, microwave energy and chemical additive. Due to the increased viscosity after the pre-cure, the migration of elastomeric material is substantially reduced relative to an uncured elastomeric material. The reduction in elastomeric material migration results in smaller menisci formed along the walls of the housing and bobbin, and reduced thinning of the compliant member formed at their ends.

A loudspeaker includes: a diaphragm; a magnetic circuit; a frame that holds the magnetic circuit; an edge that is annular and connects the diaphragm and the frame; and a voice coil body that is disposed in a magnetic gap of the magnetic circuit. The diaphragm includes: a central portion; and an outer-circumferential portion that is provided as a single piece together with the central portion in an outer periphery of the central portion, and is bonded to the edge at a location in a vicinity of the central portion.

A loudspeaker diaphragm contains a thermosetting resin as a principal component, and the thermosetting resin includes clicyclopentacliene serving as a framework structure.

An electronic device and a loudspeaker are provided. The loudspeaker includes: a hollow frame for being connected to the electronic device, a vibration means for producing sound through vibration, a voice coil for driving the vibration apparatus means and a magnetic circuit having a magnetic property and arranged at a lower end of an interior of the hollow frame, wherein an end face opening is provided at an upper end of the hollow frame; the vibration means covers the end face opening; one end of the voice coil is connected to the vibration means, and the other end can enter a gap of the magnetic circuit to perform reciprocating motion; the vibration means includes a vibrating diaphragm and a top dome fixedly installed in the middle of the vibrating diaphragm; an outer edge of the vibrating diaphragm is connected to an edge of the end face opening.

Disclosed is a vibrating film comprising a vibrating film body, wherein the vibrating film body comprises a central plane part and a peripheral fixing part, a Dome reinforcing part is arranged on the plane part, a first thermosetting adhesive layer is provided between the plane part and the Dome reinforcing part, and the plane part and the Dome reinforcing part are adhered together by thermosetting through the first thermosetting adhesive layer. Further disclosed is an assembling process for the vibrating film. The vibrating film of the present invention is high in adhesive force between parts and good in high frequency properties

Disclosed is a speaker device, comprising a vibration system, a magnetic circuit system, and an auxiliary system for accommodating and fixing the vibration system and the magnetic circuit system. The vibration system comprises a diaphragm, the auxiliary system comprises a front cover, a side of the front cover is provided a waterproof pad, said side being away from the vibration system. The diaphragm are bonded to the front cover and the waterproof pad by integrally injection molding. The speaker device of the present invention satisfies terminal waterproof requirements for IPX7 and above, and has a good waterproof effect. Besides, a production process of the waterproof speaker device is simplified, production efficiency is increased, production costs of the speaker device are decreased, and the reprocessed product yield of the speaker device is increased.